Bind champions to runes and mastery pages
In champ select a lot of problems that happen in game occur when people don't have the proper runes and masteries. While this can be solved by personal awareness, I feel like it would be a nice quality of life change, and having the option to toggle it on and off would be nice, but being able to pick a champ and the runes and masteries automatically switch to what you did last game. You'd be able to change if you want, but it would be one less thing to worry about.